Musical-instrument air-governor check.



H. E. TOWER. I MUSXCAL INSTRUMENT AlR GOVERNOR CHECK.

APPLICATION FILED JULY 2?. K91].

Patented Jan. 8,1918.

2 SHEETS SEEET l.

H. E. TOWER. AL INSTRUMENT MR GOVERNOR CHECK.

APPLICATTON FILED JULY 21.1917.

MUSIC Patented J an. 8, 1918.

2 SHEETS-SHEET 2.

HEBSCHEL E. TOWER, OF CINCINNATI, OHIO,

ASSIGNOR TO THE BALDWIN COMPANY,

OF CINCINNATI, OHIO.

MUSICAL-INSTRUMENT AIR-GOVERNOR CHECK.

Application filed July 27,

To all whom it may concern:

Be it known that I, Hnnscnnn E. Towns, a citizen of the United States,and residing at Cincinnati, in the county of Hamilton and State of Ohio,have invented certain new and useful Improvements in Musical.-Instrument Air-Governor Checks, of which the following is aspecification.

In a recent improvement for the wind m0- tors of the winding andrewinding apparatus of automatic music players, for which a patentapplication has been filed by Robert A. Gally, application #182161 aspecial governor or air check is provided to govern and limit the speedof the rewinding operation. When such a rewinding governor is used in anauto-pneumatic music player having both foot pumping means and powerdriven pumping means for inducing the wind or suction required tooperate the said wind motor, a proper regulating of the said rewindgovernor to suificiently check or reduce the air supply to the motor forthe proper rewinding the music sheet will be such as to give anundesirably slow rewinding when pumping the air by the foot umpers, thefoot pumping usually producmg less air service and of lower tension thanthe power pumping, wherefore the present invention adds an improvementto any governor to a wind motor operating a rewinding apparatus, suchimprovement consisting of an intermittent pneumatic check adapted tolessen or prevent the restricting action of said rewind governing onlywhen the foot pumpers are operate In the drawings Figure 1 is a frontview of the music sheet and its spool gearing and motor, etc., incondition for playing with the rewind governor and improved checkthereto, the tempo governor, and both foot and power pumpers forinducing the air service; Fig. 2 is a plan view of therewind governorand its check viewed from the under side of Fig. 1, Fig. 3 is a planview of the tempo governor; ig. 4 a front view similar to Fig. l butwith the parts in position for foot power rewinding; Fig. 5 is therewind governor viewed from beneath it, and Fig. 6 is a front view ofthe same overnor; both views Figs. 5 and 6 being w ien this governor isacting for the 'ewinding operation during the power pumping.

A description will first be given of the music sheet winding andrewinding parts,

Specification of Letters Patent.

Patented Jan. 8, 1918.

1917. Serial No. 183,164.

foot and power pumpers, etc., and the rewinding governor of. the priorinvention, to which the present invention is applied, and then theparticular parts of the invention of this application will be detailedand claimed.

A music sheet- 1 has a take-up spool 2 to wind said music sheet whenplaying music thereby, said spool 2 having a, shaft 3 to which is fixeda gear 1 driven by a pinion 5 during such winding and playing, as shownin Fig. 1, at which times said inion 5 is held to its position with saidgear 1 by means of a shift lever 6 engaging a grooved collar 7 bothpinion 5 and collar 6 being fast to thedrive shaft 8 which is revolvedby a wind motor 9 of any well known type.

At such position of the gearing for winding and playing, as in Fig. 1,the air service of the motor 9 is supplied through a pipe 10 connectingthe wind motor 9 to a tempo controlling box 11 which is provided with atempo valve 12 which is moved to more or less open the tempo slot orport 13. This tempo port 13 is supplied with air through a tempo airtension governor comprising a governor valve 1 1 movable over a governorport 15 leading to the main air supply chest 16, said governor valvehaving a connection 17 to the moving board 18 of the usual governorpneumatic 19, the interior of said pneumatic having air connectionthrough an opening 20 from the governed air tension chamber 21, fromwhich governed air tension chamber 21 the tempo port 13 leads past thetempo valve 12 to serve the motor 9 through the pipe 10 at such speed ofthe motor as may be set by the degree of opening of port 13 according tothe particular posi tion of the tempo valve 12.

The main air supply chest 16 has air suction created by any usualpumpers as 2 23, actuated by foot pedals as 24, 25, or by any powerdriven wind inducin apparatus as the pumper 26 driven througi a belt 27from an electric or other power motor as 28.

Between the wind motor 9 and its service pipe 10 is placed a rewindgoverning valve 29 which is adapted to he slid to a position away frominterference with the air travel from motor 9 to pipe 10 when the motor9 is to be operated for winding the music sheet 1 for playing, the tempogovernor then acting to valve 1 1 and its related parts govern the airtension for steady tempo control, the rewind governor valve 29 having noeffect on the air service to the motor 9 because the rewind governorpneumatic 30 is opposed by a spring 31 set to a resistance requiringgreater air tension to operate it than is determined by the tempogovernor valve 14 and its governor pneumatic 19, whose moving board 18is opposed by a spring 32 set to a resistance requiring less air tensionto operate it than the air tension pression,

land when collar 7 and clutch required to operate rewind governorpneumatic 30 as opposed by its spring 31.

The air service of the wind inducing apparatus through chest l6,'may beof the usual varying tension common in auto-pneumatic players to securevarying power of eX- or may be of one steady degree of air tension,provided such air service is of sufiicient tension at all times ofwinding the music sheet for playing, the tempo governor spring 32 beingset to a proper degree of resistance to respond to and secure correctgoverning of air supply to the wind motor at all such times, and thatsuch air service shall be of a sutlicient degree of tension as toprovide adequate increased power required to operate the wind motor forthe rewinding operation of the music sheet.

For rewinding the music sheet 1, one end of the roll 33 with which suchsheet is usually provided, has engagement with a clutch on a revolublespindle 35 having a sprocket wheel 36 on said spindle 35. A chain 37connects this upper sprocket wheel 36 with a lower sprocket wheel 38loosely mounted on drive shaft 8. When rewinding of the sheet 1 isdesired the shiftlever 6 is moved to the right engaging a clutch 39 oncollar 7 with a clutch 40 on lower sprocket wheel 38 to enable therevolution of said sprocket wheel 38 by drive shaft 8 from operation ofthe wind motor shaft 9, the collar 7 being engaged with the drive shaft8 and slidahly movable with said shaft to enable the clutch 39 to bemoved in and out of engagement with clutch 40 as just described, 39 areat the position to the right for rewinding, the pinion 5 is clear fromgear 4 thus permitting the free reverse revolution of take-up spool 2 asthe sheet 1 is drawn off from it by the rewinding of said sheet 1 on toits roll 33 by means of the rewinding revolution of the spindle 35 andits clutch 34 which engages and revolves said roll 33.

' When the gearing is set for the rewinding operation of the music sheet1, the valve 41 has been moved to the right of and uncovered a port 42which portvis connected by a duct or tube 43 to a pneumatic 44 which isconnected to a valve 45 over a rewind port 46, and the opening of theport 42 has caused the pneumatic 44 to raise its valve 45 and open itsport 46, thus allowing the direct service of air from the mai airinducing chest 16 through the pipe 1 to the motor 9. In lieu of thispneumati control of the port 46, mechanical connec tions may be employedfrom the shift leve 6 to the valve 45 in any well known manner The port46 when open as described act as a bypass to the tempo governor valw 14and its port 15, the tempo governor de vice being thereby renderedinefi'ective a: to any control or reduction of the air service to thewind motor during the rewinding operation of the roll gearing and themusic sheet 1 and its roll With this rewinding position and operation ofthe gearing, ineffective condition of the tempo governor, and opencondition of the direct air service through rewind port 46, the rewindgovernor pneumatic 30 is collapsed against its spring 31 by the highertension from the said direct air service through said rewind port 46 andpipe 10, with said air reduced and governed by the rewind governor valve29 which is then moved by a connection or rod as 47 connecting thepneumatic 30 to the valve 29, the rewind governor valve 29 being therebymoved to a position partly interfering with the air service of pipe 10to the motor 9, thus reducing the speed of the motor 9 to such rate asis desirable for quiet and safe rewinding and stopping of the musicsheet 1 and its roll 33, except when the rewind governing is modified ornullifiedby the vention as hereinafter described. The air connection 48from the interior of the rewind governor pneumatic 30 to the air serviceof the motor 9, is to such air service at some part thereof which is atthe 1 motor side of said rewind governor valve 29. A vent or relief port49 may be applied to the rewind governor valve 29 or thereabont, orvarious other substitutions or modifications the rewinding operation ofthe motor. but such are not necessary to be discussed herein, as thepresent invention. is applicable to any manner of governor combined witha music sheet and adapted to govern the rewinding of the sheet.-

Check valves are provided as 50 acting on seats 51 having suitableports, so that when the valves will be drawn open to allow suction ofair through pipe 52 from air chest 16 and the other air chambers of theapparatus, whereas the operation of the pumpers 22 and 23 by their footpedals 24 and 25 12% will produce air suction in air chamber 16, etc.,but will draw check valves 50 to their seats 51 and thereby preventdrawing of air from the power pumper 26.

Such pumper checks are not a part of my special check of the presentin-. 3

made to the governor for 11 winding and rewindii'ig motor 1] powerpumper 26 is acting these check 12 iiiatic 54,

neoenio invention, being an invention of the said It. A. Gally, but onlyshown to illustrate its use.

A tube 53 is connected from the power pumper 26 to the check pneumatic54: for collapsing the pneumatic 5% when the power pumper 26 isgoperated, and which check pneumatic 54: has a check block 55 attachedto the moving member of said check pneuin such position that when thefoot pedals 2A and 25 and puinpers 22 and 23 are operated and there isno suction in the power pumper 26, the said check pneumatic 5& will beexpanded by its spring 56 so that the check block 55 is brought intoposition opposite the extension 57 of the rewind governor pneumatic 30,as in Fig. 2, to partially or wholly check the col lapse of the saidrewind governor pneumatic 30 during rewinding operation of the windmotor 9, thereby securing a lesser degree or no governing or checking ofthe motor for rewinding operation.

Whenever the power pumper 26 is in operation, the suction therein actsthrough the tube 53 to collapse the check pneumatic 54 and thus move thecheck block 55 away from interference with the movement of the extension57 of the v rewinding governor pneumatic 30, thereby allowing saidgovernor pneumatic 30 to have a greater collapse during the rewindingoperation of wind motor 9 to govern or check the air supply of saidmotor, and secure a desirable speed of rewinding of the music sheet 1.

Various adaptations may be made of this invention, either with musicsheet motors, or winding and rewinding apparatus, or for any other airgoverning in musical instruments, and yet be, what I claim as myinvention, which is 1. A music sheet winding and rewinding apparatus; awind motor and driving connections therefrom to the said winding andrewinding apparatus; wind inducing means and power means connected tothe same; wind inducing means and foot pedals connected to the same; airconnections from both said wind inducing means to the said wind motorandan air governing means interposed in said air connections betweensaid wind inducing means and said wind motor, said governing meansadapted to operate only during the said rewinding operation of said windmotor, and a check means in combination with said governing means andadapted to limit the operative movement of said rewinding governingmeans only during the operation of said foot pumping means.

2. A music sheet winding and rewinding apparatus; a wind motor anddriving connections therefrom to the said winding an rewindingapparatus; wind inducing means and power means connected to the same;

wind inducing means; and foot pedals connected to the same; airconnections from both said wind inducing means to the said wind motorand an air governing means interposed in said air connections betweensaid wind inducing means and said wind motor, said governing meansadapted to operate only during the said rewinding operation of said windmotor, and a check means in combination with said governing means andadapted to limit the operative movement of said rewinding governingmeans, and a connection from said power pumping means to said checkmeans adapted to prevent the said check means from limiting theoperation of the said governing means.

3. A music sheet winding and rewinding apparatus; a wind motor anddriving connections therefrom to the said winding and rewindingapparatus; wind inducing means and power means connected to the same;wind inducing means and foot pedals connected to the same; airconnections from both said wind inducing means to the said wind motorand an air governing means interposed in said air connections betweensaid wind inducing means and said wind motor, said governing meansadapted to-operate only during the said rewinding operation of said windmotor, and a pneumatic check means in combination with said governingmeans and adapted to limit the operative movement of said rewindinggoverning means, and an air connection from said power pumping means tosaid check means adapted to prevent the said check means from limitingthe operation of the said governing means.

A. A music sheet winding and rewinding apparatus; a wind motor anddriving connections therefrom to the said winding and rewindingapparatus; wind inducing means and power means connected to the same;wind inducing means and foot pedals connected to the same; airconnections from both said wind inducing means to the said wind motorand an air governing means interposed in said air connections betweensaid wind inducing means and said wind motor, said governing meansadapted to operate only during the said rcwinding operation of said windmotor, and means adapted to limit the action of said governor onlyduring the operation of said foot pumping means.

5. A music sheet winding and rewinding apparatus; a wind motor anddriving connections therefrom to the said winding and rewindingapparatus; wind inducing means and power means connected to the same;wind inducing means and foot pedals connected to the same; airconnections from both said wind inducing means to the said wind motorand an air governing means interposed in said air connections betweensaid wind inducing means and said Wind motor,

said governing means adapted to operateonly during the said rewindlngoperation of said wind motor, and means connected to one of said pumpermeans and adapted to control the said air governing means to a differentdegree of air governing during the operation of one of said pumpingmeans than during the operation of the other said pumping means.

6. A musical playing apparatus having two alternative air serviceinducing means operated by two respective sources of power, an airgoverning means connected to both said air service means and meanscontrolled by the said two alternate air service inducing means andadapted to change the degree of air control of said governing meansaccording to which of the said air inducing means is in operation.

7. A musical apparatus having tWo alternative air service inducingmeans; an air governing means connected to said air service; and meanscontrolled by said air service and adapted to change the degree of aircontrol of said governing means according to which of said air inducingmeans is in operation. I

'8. A music playing apparatus having two alternative air serviceinducing means operated by two separate sources of power; an

air governing means connected to said air service; a wind motorconnected to the said governor; and means controlled by said air serviceand adapted to changethe degree of air control of said governing meansaccording to which of said air inducing means is in operation.

PAUL HENGGE, NORMA KEIsER.

